Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 24 for “"fermentable sugars"”.
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Development of Photocatalytic Reactor Technology for the Production of Fermentable Sugars
… bioethanol production is the release of fermentable sugars via pre-treatment. Conventionally, physico-chemical and biological pre-treatment methods are energy intensive, environmentally unfavourable and expensive. This study, however reports on the use of a less energy consuming, cheap …
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Slow-Release Urea and Highly Fermentable Sugars in Diets Fed to Lactating Dairy Cows
… to have slow-release properties and no fermentable sugars (NSU-NFS); 2) no slow-release urea with fermentable sugars (NSU-FS; 8.64% RationMate); 3) slow-release urea with no fermentable sugars (SU-NFS; 0.61 % Ruma Pro); and 4) slow-release urea and fermentable sugars in combination …
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Lignocellulosic fermentation of Saccharomyces cerevisiae to produce medium chain fatty alcohols
… challenges. Pretreatment is required to release fermentable sugars, and this process also results in various fermentation inhibitors released into the solution. A better understanding of how engineered strains utilize these fermentable sugars as well as improving resistance to the inhibitors will …
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Pretreatment Methods for the Efficient Conversion of Soybean Products to Bioethanol
… hydrolysis of cellulose and hemicellulose into fermentable sugars. With enzymeinhibitory by-products, toxicity, expensive production cost, and low product yield being setbacks facing the traditional pretreatment methods, new, environmentally benign, less expensive, and efficient pretreatment …
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Steam Explosion Pretreatment of Cotton Gin Waste for Fuel Ethanol Production
… hemicellulose are polysaccharides of primarily fermentable sugars, glucose and xylose respectively. Hemicellulose also includes small fractions of arabinose, galactose, and mannose, all of which are fermentable as well. The main issue in converting cotton gin waste to fuel ethanol is the …
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Lignocellulose deconstruction using glyceline and a chelator-mediated Fenton system
… However, it is difficult to gain access to the fermentable sugars in lignocellulose, and this problem is principally associated with limited enzyme accessibility. Hence, biomass pretreatments that destroy native cell wall structure and allows enzyme access are required for effective biomass …
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Engineering antimicrobial strains of saccharomyces cerevisiae as industrial platform for non-sterile bioprocesses
… Bacterial contaminants compete with yeast for fermentable sugars and nutrients, which obstructs starch to ethanol conversion. This leads to a reduction in ethanol yield. At large production scales, prior sterilization of the feedstocks is economically unfeasible. Therefore, antibiotic …
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Celulases para produção de etanol de segunda geração
… which can be acid or enzyme, in order to obtain fermentable sugars. Enzymatic hydrolysis is the most used to have lower glucose degradation rates, lower formation of byproducts inhibitors and to present good yields. The conversion of cellulosic component of such waste biomass, glucose, requires …
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Pulsed electric field pretreatment of lignocellulose biomass for maximum fermentable sugar yield
… during hydrolysis, leading to a reduced yield of fermentable sugars. Numerous pretreatment methods have been explored to address the recalcitrance of lignocellulosic biomass. However, many of these methods are either costly or environmentally harmful due to their substantial energy or chemical …
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Effect of irrigation on grain sorghum ethanol yield and sorghum mutants on biomass composition
… production, and 2) to evaluate the potential fermentable sugar yield of pedigreed sorghum mutants. Results showed that average kernel weight and test weight of grain sorghum increased as irrigation capacity increased, whereas kernel hardness index decreased as irrigation capacity increased. …
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High-Yield Cellulosic Hydrogen Production by Cell-Free Synthetic Cascade Enzymes: Minimal Bacterial Cellulase Cocktail and Thermostable Polyphosphate Glucokinase
… its commercialization are: effective release of fermentable sugars from pretreated biomass, and preparations of thermostable enzymes with low-cost. The hydrolysis performance of 21 reconstituted bacterial cellulase mixtures containing the glycoside hydrolase family 5 Bacillus subtilis …
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The effect of natural alternative sweeteners lucuma, yacon, and monk fruit on the growth of probiotic lactic acid bacteria
… to artificial sweetening substances. Fermentable sugars contained within these sweeteners have the potential to display prebiotic impact for active growth of beneficial probiotic bacteria. Lactic acid bacteria are a populous group of probiotic organisms with a long established history …
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Purification and characterisation of novel recombinant β-glucosidases from aspergillus with application in biofuel production
… increasing the rate of cellulose degradation to fermentable sugars. A total of 166 proteins were identified as β-glucosidases after manual BLASTp search on the Aspergillus comparative database from eight species. Evidence for Horizontal Gene Transfer (HGT) of bacterial origin of some …
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Optimization of the production of bioethanol from duckweed (Lemna minor)
… enzymes for degrading duckweed biomass to fermentable sugars; thirdly, optimisation of pretreatments and enzymatic saccharification; finally, fermentation and optimisation of the ethanol yield. Pond-grown L. minor contained 51.2 % carbohydrate (w/w dry matter) of which 77 % (including …
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Lignocellulose Saccharification via Cellulose Solvent Based Fractionation Followed by Enzymatic Hydrolysis: the Last Obstacle to Integrated Biorefineries
… biorefineries is cost-effective release of fermentable sugars from recalcitrant structure of lignocellulosic biomass. Cellulose- and organic-solvent-based lignocelluloses fractionation (COSLIF) technology was employed to overcome biomass recalcitrance. Surface response methodology (SRM) …
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Yeast engineering for pharmaceutical and nutraceutical purposes
… and ethanol pathway during utilization of fermentable sugars. Since the ethanol pathway plays a key role in cytosolic acetyl-CoA synthesis and redox balance of Saccharomyces, new metabolic engineering approaches not to knock out its ethanol pathway but to minimize the overflow metabolism …
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Comparative analysis of sorghum and other South African grains for sustainable bioethanol production
… was aimed at measuring, comparing and analyzing fermentable sugars liberated by sorghum and three other grain crops (maize, barley and wheat) that are grown in South Africa and subsequently analyze ethanol yield after fermentation. Starch was extracted from sorghum, maize, barley and wheat via …
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Investigating biomass saccharification for the production of cellulosic ethanol
… carbohydrate economy. Effective release of fermentable sugars through biomass pretreatment followed by enzymatic hydrolysis is among the most costly steps for emerging cellulosic ethanol biorefineries. In this project, two pretreatment methods (dilute acid, DA, and cellulose solvent- and …
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From field-to-glass: optimising field beans (<i>Vicia faba </i>L.) and peas (<i>Pisum sativum</i> L.) for brewing and distilling
… the harvested pulse crop as a source of fermentable material in the production of beer and distilled spirits was then assessed along with the associated protein rich by-products.<br/><br/>The IC studies successfully demonstrated the potential of growing malting quality barley in the …
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